WorkMinister in the Presbyterian Church, USA, 1927-1936Minister in the Orthodox Presbyterian Church, 1936-1937Minister in the Bible Presbyterian Church, 1937-1997 Instructor in Semitic Philology and Old Testament Criticism, Westminster, 1929-1930; Assistant Professor of Old Testament, 1930-1937President and Professor of Old Testament, Faith Theological Seminary, 1937-1971President and Professor of Old Testament, Biblical Theological Seminary, 1971-1983